Do not mis interpret
<?php echo 'Ending tag excluded';
with
<?php echo 'Ending tag excluded';
<p>But html is still visible</p>
The second one would give error. Exclude ?> if you no more html to write after the code.
同 C 或 Perl 一样，PHP 需要在每个语句后用分号结束指令。一段 PHP 代码中的结束标记隐含表示了一个分号；在一个 PHP 代码段中的最后一行可以不用分号结束。如果后面还有新行，则代码段的结束标记包含了行结束。
示例 #1 包含末尾换行符的结束标记的例子
<?php echo "Some text"; ?>
No newline
<?= "But newline now" ?>以上示例会输出：
Some textNo newline But newline now
进入和退出 PHP 解析的例子：
<?php
echo 'This is a test';
?>
<?php echo 'This is a test' ?>
<?php echo 'We omitted the last closing tag';注意:
文件末尾的 PHP 代码段结束标记可以不要，有些情况下当使用 include 或者 require 时省略掉会更好些，这样不期望的空白符就不会出现在文件末尾，之后仍然可以输出响应标头。在使用输出缓冲时也很便利，就不会看到由包含文件生成的不期望的空白符。
Do not mis interpret
<?php echo 'Ending tag excluded';
with
<?php echo 'Ending tag excluded';
<p>But html is still visible</p>
The second one would give error. Exclude ?> if you no more html to write after the code.You are also able to write more than one statement in one line, just separating with a semicolon, example:
<?php
echo "a"; echo "b"; echo "c";
#The output will be "abc" with no errors
?>A user from stack overflow had a nice explanation for the trailing newline, simply put,
<?= "Hello" ?>
Jello
would output,
HelloJello
meaning that implicit newline from the ?> tag is not there, however one can simply add that to the code such as,
<?= "Hello" ?>
Jello
the space between acts as a new line after the closing tag